Builtin performance speakers deliver an extended frequency range and lower distortion for clear music, video, and phone calls; optimized ear tips provide noise isolation to reduce ambient noise and enhance listening pleasure. IP7 nanocoating offers protection against sweat and moisture, making these earphones suitable for workouts and outdoor use where you might get wet or perspire. The earphones are compatible with most Bluetooth music players and devices, including mobile phones, tablets, computers, and TVs, ensuring broad interoperability. Equipped with a builtin Bluetooth 5.3 chip, the earphones respond quickly and reliably, improving connection speed and stability for smooth playback and calls. Longlasting battery life: up to 6 hours of listening on a single charge, and the charging case provides up to 30 hours of total use. Compact, ergonomic design and comfortable fit suitable for sports, travel, and daily use, with a focus on dependable performance. Use scenarios: During workouts or gym sessions: sweat resistance and secure fit keep music and calls going without interruption. Commute or travel: long battery life and robust Bluetooth 5.3 performance ensure reliable wireless listening on the go. Watching videos or attending calls at home or in the office: good sound quality and noise isolation enhance clarity and immersion.